| 1 | use io::bitreader::*; |
| 2 | use io::codebook::*; |
| 3 | use formats; |
| 4 | use super::super::*; |
| 5 | use super::*; |
| 6 | use super::decoder::*; |
| 7 | use super::data::*; |
| 8 | |
| 9 | #[allow(dead_code)] |
| 10 | struct Tables { |
| 11 | intra_mcbpc_cb: Codebook<u8>, |
| 12 | inter_mcbpc_cb: Codebook<u8>, |
| 13 | cbpy_cb: Codebook<u8>, |
| 14 | rl_cb: Codebook<H263RLSym>, |
| 15 | aic_rl_cb: Codebook<H263RLSym>, |
| 16 | mv_cb: Codebook<u8>, |
| 17 | } |
| 18 | |
| 19 | #[derive(Clone,Copy)] |
| 20 | struct RPRInfo { |
| 21 | present: bool, |
| 22 | bits: u8, |
| 23 | widths: [usize; 8], |
| 24 | heights: [usize; 8], |
| 25 | } |
| 26 | |
| 27 | struct RealVideo20Decoder { |
| 28 | info: Rc<NACodecInfo>, |
| 29 | dec: H263BaseDecoder, |
| 30 | tables: Tables, |
| 31 | w: usize, |
| 32 | h: usize, |
| 33 | minor_ver: u8, |
| 34 | rpr: RPRInfo, |
| 35 | } |
| 36 | |
| 37 | struct RealVideo20BR<'a> { |
| 38 | br: BitReader<'a>, |
| 39 | tables: &'a Tables, |
| 40 | num_slices: usize, |
| 41 | slice_no: usize, |
| 42 | slice_off: Vec<u32>, |
| 43 | w: usize, |
| 44 | h: usize, |
| 45 | mb_w: usize, |
| 46 | mb_h: usize, |
| 47 | mb_x: usize, |
| 48 | mb_y: usize, |
| 49 | mb_pos_bits: u8, |
| 50 | mb_count: usize, |
| 51 | mb_end: usize, |
| 52 | minor_ver: u8, |
| 53 | rpr: RPRInfo, |
| 54 | is_intra: bool, |
| 55 | } |
| 56 | |
| 57 | struct RV20SliceInfo { |
| 58 | ftype: Type, |
| 59 | qscale: u8, |
| 60 | mb_x: usize, |
| 61 | mb_y: usize, |
| 62 | mb_pos: usize, |
| 63 | w: usize, |
| 64 | h: usize, |
| 65 | } |
| 66 | |
| 67 | impl RV20SliceInfo { |
| 68 | fn new(ftype: Type, qscale: u8, mb_x: usize, mb_y: usize, mb_pos: usize, w: usize, h: usize) -> Self { |
| 69 | RV20SliceInfo { ftype: ftype, qscale: qscale, mb_x: mb_x, mb_y: mb_y, mb_pos: mb_pos, w: w, h: h } |
| 70 | } |
| 71 | } |
| 72 | |
| 73 | impl<'a> RealVideo20BR<'a> { |
| 74 | fn new(src: &'a [u8], tables: &'a Tables, width: usize, height: usize, minor_ver: u8, rpr: RPRInfo) -> Self { |
| 75 | let nslices = (src[0] as usize) + 1; |
| 76 | let mut slice_offs = Vec::with_capacity(nslices); |
| 77 | { |
| 78 | let offs = &src[1..][..nslices * 8]; |
| 79 | let mut br = BitReader::new(offs, offs.len(), BitReaderMode::BE); |
| 80 | for _ in 0..nslices { |
| 81 | br.skip(32).unwrap(); |
| 82 | let off = br.read(32).unwrap(); |
| 83 | slice_offs.push(off); |
| 84 | } |
| 85 | } |
| 86 | let soff = nslices * 8 + 1; |
| 87 | let mb_w = (width + 15) >> 4; |
| 88 | let mb_h = (height + 15) >> 4; |
| 89 | let max_pos = mb_w * mb_h - 1; |
| 90 | let mut mbpb = 0; |
| 91 | for i in 0..H263_MBB.len() { |
| 92 | if max_pos <= H263_MBB[i].blocks { |
| 93 | mbpb = H263_MBB[i].bits; |
| 94 | break; |
| 95 | } |
| 96 | } |
| 97 | RealVideo20BR { |
| 98 | br: BitReader::new(&src[soff..], src.len() - soff, BitReaderMode::BE), |
| 99 | tables: tables, |
| 100 | num_slices: nslices, |
| 101 | slice_no: 0, |
| 102 | slice_off: slice_offs, |
| 103 | w: width, |
| 104 | h: height, |
| 105 | mb_w: mb_w, |
| 106 | mb_h: mb_h, |
| 107 | mb_pos_bits: mbpb, |
| 108 | mb_x: 0, |
| 109 | mb_y: 0, |
| 110 | mb_count: 0, |
| 111 | mb_end: 0, |
| 112 | minor_ver: minor_ver, |
| 113 | rpr: rpr, |
| 114 | is_intra: false, |
| 115 | } |
| 116 | } |
| 117 | |
| 118 | fn decode_block(&mut self, quant: u8, intra: bool, coded: bool, blk: &mut [i16; 64], plane_no: usize) -> DecoderResult<()> { |
| 119 | let mut br = &mut self.br; |
| 120 | let mut idx = 0; |
| 121 | if !self.is_intra && intra { |
| 122 | let mut dc = br.read(8).unwrap() as i16; |
| 123 | if dc == 255 { dc = 128; } |
| 124 | blk[0] = dc << 3; |
| 125 | idx = 1; |
| 126 | } |
| 127 | if !coded { return Ok(()); } |
| 128 | |
| 129 | let rl_cb = if self.is_intra { &self.tables.aic_rl_cb } else { &self.tables.rl_cb }; |
| 130 | let q_add = if quant == 0 { 0i16 } else { ((quant - 1) | 1) as i16 }; |
| 131 | let q = (quant * 2) as i16; |
| 132 | while idx < 64 { |
| 133 | let code = br.read_cb(rl_cb).unwrap(); |
| 134 | let run; |
| 135 | let mut level; |
| 136 | let last; |
| 137 | if !code.is_escape() { |
| 138 | run = code.get_run(); |
| 139 | level = code.get_level(); |
| 140 | last = code.is_last(); |
| 141 | if br.read_bool().unwrap() { level = -level; } |
| 142 | level = (level * q) + q_add; |
| 143 | } else { |
| 144 | last = br.read_bool().unwrap(); |
| 145 | run = br.read(6).unwrap() as u8; |
| 146 | level = br.read_s(8).unwrap() as i16; |
| 147 | if level == -128 { |
| 148 | let low = br.read(5).unwrap() as i16; |
| 149 | let top = br.read_s(6).unwrap() as i16; |
| 150 | level = (top << 5) | low; |
| 151 | } |
| 152 | level = (level * q) + q_add; |
| 153 | if level < -2048 { level = -2048; } |
| 154 | if level > 2047 { level = 2047; } |
| 155 | } |
| 156 | idx += run; |
| 157 | validate!(idx < 64); |
| 158 | let oidx = H263_ZIGZAG[idx as usize]; |
| 159 | blk[oidx] = level; |
| 160 | idx += 1; |
| 161 | if last { break; } |
| 162 | } |
| 163 | Ok(()) |
| 164 | } |
| 165 | } |
| 166 | |
| 167 | fn decode_mv_component(br: &mut BitReader, mv_cb: &Codebook<u8>) -> DecoderResult<i16> { |
| 168 | let code = br.read_cb(mv_cb).unwrap() as i16; |
| 169 | if code == 0 { return Ok(0) } |
| 170 | if !br.read_bool().unwrap() { |
| 171 | Ok(code) |
| 172 | } else { |
| 173 | Ok(-code) |
| 174 | } |
| 175 | } |
| 176 | |
| 177 | fn decode_mv(br: &mut BitReader, mv_cb: &Codebook<u8>) -> DecoderResult<MV> { |
| 178 | let xval = decode_mv_component(br, mv_cb).unwrap(); |
| 179 | let yval = decode_mv_component(br, mv_cb).unwrap(); |
| 180 | //println!(" MV {},{} @ {}", xval, yval, br.tell()); |
| 181 | Ok(MV::new(xval, yval)) |
| 182 | } |
| 183 | |
| 184 | impl<'a> BlockDecoder for RealVideo20BR<'a> { |
| 185 | |
| 186 | #[allow(unused_variables)] |
| 187 | fn decode_pichdr(&mut self) -> DecoderResult<PicInfo> { |
| 188 | self.slice_no = 0; |
| 189 | println!("decoding picture header size {}", if self.num_slices > 1 { self.slice_off[1] } else { ((self.br.tell() as u32) + (self.br.left() as u32))/8 }); |
| 190 | self.mb_x = 0; |
| 191 | self.mb_y = 0; |
| 192 | self.mb_count = self.mb_w * self.mb_h; |
| 193 | let shdr = self.read_slice_header().unwrap(); |
| 194 | println!("slice ends @ {}\n", self.br.tell()); |
| 195 | self.slice_no += 1; |
| 196 | validate!((shdr.mb_x == 0) && (shdr.mb_y == 0)); |
| 197 | let mb_count; |
| 198 | if self.slice_no < self.num_slices { |
| 199 | let pos = self.br.tell(); |
| 200 | let shdr2 = self.read_slice_header().unwrap(); |
| 201 | self.br.seek(pos as u32)?; |
| 202 | mb_count = shdr2.mb_pos - shdr.mb_pos; |
| 203 | } else { |
| 204 | mb_count = self.mb_w * self.mb_h; |
| 205 | } |
| 206 | |
| 207 | self.mb_x = shdr.mb_x; |
| 208 | self.mb_y = shdr.mb_y; |
| 209 | self.mb_count = mb_count; |
| 210 | self.mb_end = shdr.mb_pos + mb_count; |
| 211 | self.is_intra = shdr.ftype == Type::I; |
| 212 | |
| 213 | let picinfo = PicInfo::new(shdr.w, shdr.h, shdr.ftype, shdr.qscale, false, MVMode::Old, 0, None, true); |
| 214 | Ok(picinfo) |
| 215 | } |
| 216 | |
| 217 | #[allow(unused_variables)] |
| 218 | fn decode_slice_header(&mut self, info: &PicInfo) -> DecoderResult<Slice> { |
| 219 | //println!("read slice {} header", self.slice_no); |
| 220 | let shdr = self.read_slice_header().unwrap(); |
| 221 | self.slice_no += 1; |
| 222 | let mb_count; |
| 223 | if self.slice_no < self.num_slices { |
| 224 | let shdr2 = self.read_slice_header().unwrap(); |
| 225 | mb_count = shdr2.mb_pos - shdr.mb_pos; |
| 226 | } else { |
| 227 | mb_count = self.mb_w * self.mb_h - shdr.mb_pos; |
| 228 | } |
| 229 | let ret = Slice::new(shdr.mb_x, shdr.mb_y, shdr.qscale); |
| 230 | self.mb_x = shdr.mb_x; |
| 231 | self.mb_y = shdr.mb_y; |
| 232 | self.mb_count = mb_count; |
| 233 | self.mb_end = shdr.mb_pos + mb_count; |
| 234 | |
| 235 | Ok(ret) |
| 236 | } |
| 237 | |
| 238 | fn decode_block_header(&mut self, info: &PicInfo, slice: &Slice) -> DecoderResult<BlockInfo> { |
| 239 | let mut br = &mut self.br; |
| 240 | let mut q = slice.get_quant(); |
| 241 | match info.get_mode() { |
| 242 | Type::I => { |
| 243 | let mut cbpc = br.read_cb(&self.tables.intra_mcbpc_cb).unwrap(); |
| 244 | while cbpc == 8 { cbpc = br.read_cb(&self.tables.intra_mcbpc_cb).unwrap(); } |
| 245 | if self.is_intra { |
| 246 | let acpred = br.read_bool()?; |
| 247 | println!(" acp {} @ {}", acpred, br.tell()); |
| 248 | if acpred { |
| 249 | br.skip(1)?;//pred direction |
| 250 | } |
| 251 | } |
| 252 | let cbpy = br.read_cb(&self.tables.cbpy_cb).unwrap(); |
| 253 | let cbp = (cbpy << 2) | (cbpc & 3); |
| 254 | let dquant = (cbpc & 4) != 0; |
| 255 | if dquant { |
| 256 | let idx = br.read(2).unwrap() as usize; |
| 257 | q = ((q as i16) + (H263_DQUANT_TAB[idx] as i16)) as u8; |
| 258 | } |
| 259 | println!(" MB {},{} CBP {:X} @ {}", self.mb_x, self.mb_y, cbp, br.tell()); |
| 260 | self.mb_x += 1; |
| 261 | if self.mb_x == self.mb_w { |
| 262 | self.mb_x = 0; |
| 263 | self.mb_y += 1; |
| 264 | } |
| 265 | Ok(BlockInfo::new(Type::I, cbp, q)) |
| 266 | }, |
| 267 | Type::P => { |
| 268 | if br.read_bool().unwrap() { |
| 269 | self.mb_x += 1; |
| 270 | if self.mb_x == self.mb_w { |
| 271 | self.mb_x = 0; |
| 272 | self.mb_y += 1; |
| 273 | } |
| 274 | return Ok(BlockInfo::new(Type::Skip, 0, info.get_quant())); |
| 275 | } |
| 276 | let mut cbpc = br.read_cb(&self.tables.inter_mcbpc_cb).unwrap(); |
| 277 | while cbpc == 20 { cbpc = br.read_cb(&self.tables.inter_mcbpc_cb).unwrap(); } |
| 278 | let is_intra = (cbpc & 0x04) != 0; |
| 279 | let dquant = (cbpc & 0x08) != 0; |
| 280 | let is_4x4 = (cbpc & 0x10) != 0; |
| 281 | if is_intra { |
| 282 | let cbpy = br.read_cb(&self.tables.cbpy_cb).unwrap(); |
| 283 | let cbp = (cbpy << 2) | (cbpc & 3); |
| 284 | if dquant { |
| 285 | let idx = br.read(2).unwrap() as usize; |
| 286 | q = ((q as i16) + (H263_DQUANT_TAB[idx] as i16)) as u8; |
| 287 | } |
| 288 | let binfo = BlockInfo::new(Type::I, cbp, q); |
| 289 | self.mb_x += 1; |
| 290 | if self.mb_x == self.mb_w { |
| 291 | self.mb_x = 0; |
| 292 | self.mb_y += 1; |
| 293 | } |
| 294 | return Ok(binfo); |
| 295 | } |
| 296 | |
| 297 | let mut cbpy = br.read_cb(&self.tables.cbpy_cb).unwrap(); |
| 298 | // if /* !aiv && */(cbpc & 3) != 3 { |
| 299 | cbpy ^= 0xF; |
| 300 | // } |
| 301 | let cbp = (cbpy << 2) | (cbpc & 3); |
| 302 | if dquant { |
| 303 | let idx = br.read(2).unwrap() as usize; |
| 304 | q = ((q as i16) + (H263_DQUANT_TAB[idx] as i16)) as u8; |
| 305 | } |
| 306 | println!(" MB {}.{} cbp = {:X}", self.mb_x, self.mb_y, cbp); |
| 307 | let mut binfo = BlockInfo::new(Type::P, cbp, q); |
| 308 | if !is_4x4 { |
| 309 | let mvec: [MV; 1] = [decode_mv(br, &self.tables.mv_cb).unwrap()]; |
| 310 | binfo.set_mv(&mvec); |
| 311 | } else { |
| 312 | let mvec: [MV; 4] = [ |
| 313 | decode_mv(br, &self.tables.mv_cb).unwrap(), |
| 314 | decode_mv(br, &self.tables.mv_cb).unwrap(), |
| 315 | decode_mv(br, &self.tables.mv_cb).unwrap(), |
| 316 | decode_mv(br, &self.tables.mv_cb).unwrap() |
| 317 | ]; |
| 318 | binfo.set_mv(&mvec); |
| 319 | } |
| 320 | self.mb_x += 1; |
| 321 | if self.mb_x == self.mb_w { |
| 322 | self.mb_x = 0; |
| 323 | self.mb_y += 1; |
| 324 | } |
| 325 | Ok(binfo) |
| 326 | }, |
| 327 | _ => { println!("wrong info mode"); Err(DecoderError::InvalidData) }, |
| 328 | } |
| 329 | } |
| 330 | |
| 331 | #[allow(unused_variables)] |
| 332 | fn decode_block_intra(&mut self, info: &BlockInfo, quant: u8, no: usize, coded: bool, blk: &mut [i16; 64]) -> DecoderResult<()> { |
| 333 | self.decode_block(quant, true, coded, blk, if no < 4 { 0 } else { no - 3 }) |
| 334 | } |
| 335 | |
| 336 | #[allow(unused_variables)] |
| 337 | fn decode_block_inter(&mut self, info: &BlockInfo, quant: u8, no: usize, coded: bool, blk: &mut [i16; 64]) -> DecoderResult<()> { |
| 338 | self.decode_block(quant, false, coded, blk, if no < 4 { 0 } else { no - 3 }) |
| 339 | } |
| 340 | |
| 341 | fn is_slice_end(&mut self) -> bool { self.mb_x + self.mb_y * self.mb_w >= self.mb_end } |
| 342 | |
| 343 | fn filter_row(&mut self, buf: &mut NAVideoBuffer<u8>, mb_y: usize, mb_w: usize, cbpi: &CBPInfo) { |
| 344 | let stride = buf.get_stride(0); |
| 345 | let mut off = buf.get_offset(0) + mb_y * 16 * stride; |
| 346 | for mb_x in 0..mb_w { |
| 347 | let coff = off; |
| 348 | let coded0 = cbpi.is_coded(mb_x, 0); |
| 349 | let coded1 = cbpi.is_coded(mb_x, 1); |
| 350 | let q = cbpi.get_q(mb_w + mb_x); |
| 351 | if mb_y != 0 { |
| 352 | if coded0 && cbpi.is_coded_top(mb_x, 0) { deblock_hor(buf, 0, q, coff); } |
| 353 | if coded1 && cbpi.is_coded_top(mb_x, 1) { deblock_hor(buf, 0, q, coff + 8); } |
| 354 | } |
| 355 | let coff = off + 8 * stride; |
| 356 | if cbpi.is_coded(mb_x, 2) && coded0 { deblock_hor(buf, 0, q, coff); } |
| 357 | if cbpi.is_coded(mb_x, 3) && coded1 { deblock_hor(buf, 0, q, coff + 8); } |
| 358 | off += 16; |
| 359 | } |
| 360 | let mut leftt = false; |
| 361 | let mut leftc = false; |
| 362 | let mut off = buf.get_offset(0) + mb_y * 16 * stride; |
| 363 | for mb_x in 0..mb_w { |
| 364 | let ctop0 = cbpi.is_coded_top(mb_x, 0); |
| 365 | let ctop1 = cbpi.is_coded_top(mb_x, 0); |
| 366 | let ccur0 = cbpi.is_coded(mb_x, 0); |
| 367 | let ccur1 = cbpi.is_coded(mb_x, 1); |
| 368 | let q = cbpi.get_q(mb_w + mb_x); |
| 369 | if mb_y != 0 { |
| 370 | let coff = off - 8 * stride; |
| 371 | let qtop = cbpi.get_q(mb_x); |
| 372 | if leftt && ctop0 { deblock_ver(buf, 0, qtop, coff); } |
| 373 | if ctop0 && ctop1 { deblock_ver(buf, 0, qtop, coff + 8); } |
| 374 | } |
| 375 | if leftc && ccur0 { deblock_ver(buf, 0, q, off); } |
| 376 | if ccur0 && ccur1 { deblock_ver(buf, 0, q, off + 8); } |
| 377 | leftt = ctop1; |
| 378 | leftc = ccur1; |
| 379 | off += 16; |
| 380 | } |
| 381 | let strideu = buf.get_stride(1); |
| 382 | let stridev = buf.get_stride(2); |
| 383 | let offu = buf.get_offset(1) + mb_y * 8 * strideu; |
| 384 | let offv = buf.get_offset(2) + mb_y * 8 * stridev; |
| 385 | if mb_y != 0 { |
| 386 | for mb_x in 0..mb_w { |
| 387 | let ctu = cbpi.is_coded_top(mb_x, 4); |
| 388 | let ccu = cbpi.is_coded(mb_x, 4); |
| 389 | let ctv = cbpi.is_coded_top(mb_x, 5); |
| 390 | let ccv = cbpi.is_coded(mb_x, 5); |
| 391 | let q = cbpi.get_q(mb_w + mb_x); |
| 392 | if ctu && ccu { deblock_hor(buf, 1, q, offu + mb_x * 8); } |
| 393 | if ctv && ccv { deblock_hor(buf, 2, q, offv + mb_x * 8); } |
| 394 | } |
| 395 | let mut leftu = false; |
| 396 | let mut leftv = false; |
| 397 | let offu = buf.get_offset(1) + (mb_y - 1) * 8 * strideu; |
| 398 | let offv = buf.get_offset(2) + (mb_y - 1) * 8 * stridev; |
| 399 | for mb_x in 0..mb_w { |
| 400 | let ctu = cbpi.is_coded_top(mb_x, 4); |
| 401 | let ctv = cbpi.is_coded_top(mb_x, 5); |
| 402 | let qt = cbpi.get_q(mb_x); |
| 403 | if leftu && ctu { deblock_ver(buf, 1, qt, offu + mb_x * 8); } |
| 404 | if leftv && ctv { deblock_ver(buf, 2, qt, offv + mb_x * 8); } |
| 405 | leftu = ctu; |
| 406 | leftv = ctv; |
| 407 | } |
| 408 | } |
| 409 | } |
| 410 | } |
| 411 | |
| 412 | fn deblock_hor(buf: &mut NAVideoBuffer<u8>, comp: usize, q: u8, off: usize) { |
| 413 | let stride = buf.get_stride(comp); |
| 414 | let mut dptr = buf.get_data_mut(); |
| 415 | let mut buf = dptr.as_mut_slice(); |
| 416 | for x in 0..8 { |
| 417 | let a = buf[off - 2 * stride + x] as i16; |
| 418 | let b = buf[off - 1 * stride + x] as i16; |
| 419 | let c = buf[off + 0 * stride + x] as i16; |
| 420 | let d = buf[off + 1 * stride + x] as i16; |
| 421 | let diff = ((a - d) * 3 + (c - b) * 8) >> 4; |
| 422 | if (diff != 0) && (diff >= -32) && (diff < 32) { |
| 423 | let d0 = diff.abs() * 2 - (q as i16); |
| 424 | let d1 = if d0 < 0 { 0 } else { d0 }; |
| 425 | let d2 = diff.abs() - d1; |
| 426 | let d3 = if d2 < 0 { 0 } else { d2 }; |
| 427 | |
| 428 | let delta = if diff < 0 { -d3 } else { d3 }; |
| 429 | |
| 430 | let b1 = b + delta; |
| 431 | if b1 < 0 { buf[off - 1 * stride + x] = 0; } |
| 432 | else if b1 > 255 { buf[off - 1 * stride + x] = 0xFF; } |
| 433 | else { buf[off - 1 * stride + x] = b1 as u8; } |
| 434 | let c1 = c - delta; |
| 435 | if c1 < 0 { buf[off + x] = 0; } |
| 436 | else if c1 > 255 { buf[off + x] = 0xFF; } |
| 437 | else { buf[off + x] = c1 as u8; } |
| 438 | } |
| 439 | } |
| 440 | } |
| 441 | |
| 442 | impl<'a> RealVideo20BR<'a> { |
| 443 | fn read_slice_header(&mut self) -> DecoderResult<RV20SliceInfo> { |
| 444 | validate!(self.slice_no < self.num_slices); |
| 445 | |
| 446 | let mut br = &mut self.br; |
| 447 | br.seek(self.slice_off[self.slice_no] * 8).unwrap(); |
| 448 | //println!(" slice at off {}", br.tell()); |
| 449 | |
| 450 | let frm_type = br.read(2).unwrap(); |
| 451 | let ftype = match frm_type { |
| 452 | 0 | 1 => { Type::I }, |
| 453 | 2 => { Type::P }, |
| 454 | _ => { Type::Skip }, |
| 455 | }; |
| 456 | |
| 457 | let marker = br.read(1).unwrap(); |
| 458 | validate!(marker == 0); |
| 459 | let qscale = br.read(5).unwrap() as u8; |
| 460 | validate!(qscale > 0); |
| 461 | if self.minor_ver >= 2 { |
| 462 | br.skip(1).unwrap(); // loop filter |
| 463 | } |
| 464 | let seq = if self.minor_ver <= 1 { |
| 465 | br.read(8).unwrap() << 7 |
| 466 | } else { |
| 467 | br.read(13).unwrap() << 2 |
| 468 | }; |
| 469 | let w; |
| 470 | let h; |
| 471 | if self.rpr.present { |
| 472 | let rpr = br.read(self.rpr.bits).unwrap() as usize; |
| 473 | if rpr == 0 { |
| 474 | w = self.w; |
| 475 | h = self.h; |
| 476 | } else { |
| 477 | w = self.rpr.widths[rpr]; |
| 478 | h = self.rpr.heights[rpr]; |
| 479 | validate!((w != 0) && (h != 0)); |
| 480 | } |
| 481 | } else { |
| 482 | w = self.w; |
| 483 | h = self.h; |
| 484 | } |
| 485 | |
| 486 | let mb_pos = br.read(self.mb_pos_bits).unwrap() as usize; |
| 487 | let mb_x = mb_pos % self.mb_w; |
| 488 | let mb_y = mb_pos / self.mb_w; |
| 489 | |
| 490 | br.skip(1).unwrap(); // no rounding |
| 491 | |
| 492 | if (self.minor_ver <= 1) && (frm_type == 3) { |
| 493 | br.skip(5).unwrap(); |
| 494 | } |
| 495 | println!("slice q {} mb {},{}", qscale, mb_x, mb_y); |
| 496 | |
| 497 | Ok(RV20SliceInfo::new(ftype, qscale, mb_x, mb_y, mb_pos, w, h)) |
| 498 | } |
| 499 | } |
| 500 | |
| 501 | fn deblock_ver(buf: &mut NAVideoBuffer<u8>, comp: usize, q: u8, off: usize) { |
| 502 | let stride = buf.get_stride(comp); |
| 503 | let mut dptr = buf.get_data_mut(); |
| 504 | let mut buf = dptr.as_mut_slice(); |
| 505 | for y in 0..8 { |
| 506 | let a = buf[off - 2 + y * stride] as i16; |
| 507 | let b = buf[off - 1 + y * stride] as i16; |
| 508 | let c = buf[off + 0 + y * stride] as i16; |
| 509 | let d = buf[off + 1 + y * stride] as i16; |
| 510 | let diff = ((a - d) * 3 + (c - b) * 8) >> 4; |
| 511 | if (diff != 0) && (diff >= -32) && (diff < 32) { |
| 512 | let d0 = diff.abs() * 2 - (q as i16); |
| 513 | let d1 = if d0 < 0 { 0 } else { d0 }; |
| 514 | let d2 = diff.abs() - d1; |
| 515 | let d3 = if d2 < 0 { 0 } else { d2 }; |
| 516 | |
| 517 | let delta = if diff < 0 { -d3 } else { d3 }; |
| 518 | |
| 519 | let b1 = b + delta; |
| 520 | if b1 < 0 { buf[off - 1 + y * stride] = 0; } |
| 521 | else if b1 > 255 { buf[off - 1 + y * stride] = 0xFF; } |
| 522 | else { buf[off - 1 + y * stride] = b1 as u8; } |
| 523 | let c1 = c - delta; |
| 524 | if c1 < 0 { buf[off + y * stride] = 0; } |
| 525 | else if c1 > 255 { buf[off + y * stride] = 0xFF; } |
| 526 | else { buf[off + y * stride] = c1 as u8; } |
| 527 | } |
| 528 | } |
| 529 | } |
| 530 | |
| 531 | impl RealVideo20Decoder { |
| 532 | fn new() -> Self { |
| 533 | let mut coderead = H263ShortCodeReader::new(H263_INTRA_MCBPC); |
| 534 | let intra_mcbpc_cb = Codebook::new(&mut coderead, CodebookMode::MSB).unwrap(); |
| 535 | let mut coderead = H263ShortCodeReader::new(H263_INTER_MCBPC); |
| 536 | let inter_mcbpc_cb = Codebook::new(&mut coderead, CodebookMode::MSB).unwrap(); |
| 537 | let mut coderead = H263ShortCodeReader::new(H263_CBPY); |
| 538 | let cbpy_cb = Codebook::new(&mut coderead, CodebookMode::MSB).unwrap(); |
| 539 | let mut coderead = H263RLCodeReader::new(H263_RL_CODES); |
| 540 | let rl_cb = Codebook::new(&mut coderead, CodebookMode::MSB).unwrap(); |
| 541 | let mut coderead = H263RLCodeReader::new(H263_RL_CODES_AIC); |
| 542 | let aic_rl_cb = Codebook::new(&mut coderead, CodebookMode::MSB).unwrap(); |
| 543 | let mut coderead = H263ShortCodeReader::new(H263_MV); |
| 544 | let mv_cb = Codebook::new(&mut coderead, CodebookMode::MSB).unwrap(); |
| 545 | |
| 546 | let tables = Tables { |
| 547 | intra_mcbpc_cb: intra_mcbpc_cb, |
| 548 | inter_mcbpc_cb: inter_mcbpc_cb, |
| 549 | cbpy_cb: cbpy_cb, |
| 550 | rl_cb: rl_cb, |
| 551 | aic_rl_cb: aic_rl_cb, |
| 552 | mv_cb: mv_cb, |
| 553 | }; |
| 554 | |
| 555 | RealVideo20Decoder{ |
| 556 | info: Rc::new(DUMMY_CODEC_INFO), |
| 557 | dec: H263BaseDecoder::new(), |
| 558 | tables: tables, |
| 559 | w: 0, |
| 560 | h: 0, |
| 561 | minor_ver: 0, |
| 562 | rpr: RPRInfo { present: false, bits: 0, widths: [0; 8], heights: [0; 8] }, |
| 563 | } |
| 564 | } |
| 565 | } |
| 566 | |
| 567 | impl NADecoder for RealVideo20Decoder { |
| 568 | fn init(&mut self, info: Rc<NACodecInfo>) -> DecoderResult<()> { |
| 569 | if let NACodecTypeInfo::Video(vinfo) = info.get_properties() { |
| 570 | let w = vinfo.get_width(); |
| 571 | let h = vinfo.get_height(); |
| 572 | let fmt = formats::YUV420_FORMAT; |
| 573 | let myinfo = NACodecTypeInfo::Video(NAVideoInfo::new(w, h, false, fmt)); |
| 574 | self.info = Rc::new(NACodecInfo::new_ref(info.get_name(), myinfo, info.get_extradata())); |
| 575 | self.w = w; |
| 576 | self.h = h; |
| 577 | |
| 578 | let edata = info.get_extradata().unwrap(); |
| 579 | let src: &[u8] = &edata; |
| 580 | let ver = ((src[4] as u32) << 12) | ((src[5] as u32) << 4) | ((src[6] as u32) >> 4); |
| 581 | let maj_ver = ver >> 16; |
| 582 | let min_ver = (ver >> 8) & 0xFF; |
| 583 | let mic_ver = ver & 0xFF; |
| 584 | println!("ver {:06X}", ver); |
| 585 | validate!(maj_ver == 2); |
| 586 | self.minor_ver = min_ver as u8; |
| 587 | let rprb = src[1] & 7; |
| 588 | if rprb == 0 { |
| 589 | self.rpr.present = false; |
| 590 | } else { |
| 591 | self.rpr.present = true; |
| 592 | self.rpr.bits = rprb as u8; |
| 593 | for i in 4..(src.len()/2) { |
| 594 | self.rpr.widths [i - 4] = (src[i * 2] as usize) * 4; |
| 595 | self.rpr.heights[i - 4] = (src[i * 2 + 1] as usize) * 4; |
| 596 | } |
| 597 | } |
| 598 | Ok(()) |
| 599 | } else { |
| 600 | println!(".unwrap().unwrap().unwrap()"); |
| 601 | Err(DecoderError::InvalidData) |
| 602 | } |
| 603 | } |
| 604 | fn decode(&mut self, pkt: &NAPacket) -> DecoderResult<NAFrameRef> { |
| 605 | let src = pkt.get_buffer(); |
| 606 | |
| 607 | println!(" decode frame size {}, {} slices", src.len(), src[0]+1); |
| 608 | let mut ibr = RealVideo20BR::new(&src, &self.tables, self.w, self.h, self.minor_ver, self.rpr); |
| 609 | |
| 610 | let bufinfo = self.dec.parse_frame(&mut ibr).unwrap(); |
| 611 | |
| 612 | let mut frm = NAFrame::new_from_pkt(pkt, self.info.clone(), bufinfo); |
| 613 | frm.set_keyframe(self.dec.is_intra()); |
| 614 | frm.set_frame_type(if self.dec.is_intra() { FrameType::I } else { FrameType::P }); |
| 615 | Ok(Rc::new(RefCell::new(frm))) |
| 616 | } |
| 617 | } |
| 618 | |
| 619 | struct MBB { blocks: usize, bits: u8 } |
| 620 | const H263_MBB: &[MBB; 7] = &[ |
| 621 | MBB{ blocks: 47, bits: 6 }, |
| 622 | MBB{ blocks: 98, bits: 7 }, |
| 623 | MBB{ blocks: 395, bits: 9 }, |
| 624 | MBB{ blocks: 1583, bits: 11 }, |
| 625 | MBB{ blocks: 6335, bits: 13 }, |
| 626 | MBB{ blocks: 9215, bits: 14 }, |
| 627 | MBB{ blocks: 65536, bits: 14 }, |
| 628 | ]; |
| 629 | |
| 630 | pub fn get_decoder() -> Box<NADecoder> { |
| 631 | Box::new(RealVideo20Decoder::new()) |
| 632 | } |
| 633 | |
| 634 | #[cfg(test)] |
| 635 | mod test { |
| 636 | use test::dec_video::test_file_decoding; |
| 637 | #[test] |
| 638 | fn test_rv20() { |
| 639 | test_file_decoding("realmedia", "assets/RV/rv20_cook_640x352_realproducer_plus_8.51.rm", None/*Some(160)*/, true, false, Some("rv20")); |
| 640 | } |
| 641 | } |